I don't think you are nit picking. It is noise that is being generated that is interfering with your music listening - which is unacceptable. I don't know if you can do anything about it but there is a way to minimize fan noise and still move some air if you work around the problem from the original design. One way to do it is to use two 120 volt motors in series (electrically) so they only see 60 volts each and run at reduced speed and noise. The two fans move less air individually than normal but the combined output may be close (may be more or less) to the original single fan but with less noise. I built a custom amp that I only needed to move a small amount of air in so I used a single 220 volt fan and applied 120 volts to it so it moved enough air but was silent unless you got your ear close to the amp. Sorry there isn't an easy answer but you might contact ARC and see what they have to say.
Brad
Brad